Quote: Originally Posted by rigz
you can see those are obviously not virus..or malware,trojan,worms etc. .i scanned them all one by one..
As gregrocker said earlier, I'd also suggest uninstalling Avast. Something might have corrupted the program. You could go into control panel > programs and features to uninstall but I prefer Revo Uninstaller. It does a better job of removing program leftovers. There are two versions of Revo - free and a 30 day trial. The free should work just fine.
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Once Avast is uninstalled I'd follow with gregrocker's additional suggestions. Install Microsoft Security Essentials so there's a security suite on the machine. Download, install, update and run Malwarebytes full scan. If no malware is detected you could either keep MSE or uninstall and go back to Avast and see if it's working correctly.